Cope-flask.



M. N. GRAM.

COPE FLASK.

APPUCATION FILED NOV. 9, 1916.

1 Patented. July 10, 1917.

WITNESSES UNITED @IA'IFS PATENT @FFIQE.

MICHAEL GBAM, or PITTSBURGH, PENNSYLVANIA.

COPE-ELASK.

Specification of Letters Patent.

Application filed November 9, 1916. Serial No. 130,306.

To all whom it may concern. 1

Be it known that I. lv'l'iorunr. N. Glenna subject of the Emperor of Austria. and resident of Pittsburgh. in the county of Allegheny and State of Pennsylvania. have invented a new and useful Improvement in CopeFlasks; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention. pertains to molding flasks. and has special reference to what are known as cope and drag flasks.

The object of my invention is to provide a cheap. simple and efficient form of a cope flask, which will provide for having separate and removable bars, said supporting bars to take the place of permanent bars gen erally used in the same, thereby overcoming the objection of having to remove such permanent parts when necessary and the trouble and expense of keeping the same in order.

To these ends, my invention consists, generally stated in the novel construction, arrangement and combination of parts, as hereinafter more specifically set forth and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use my improved flask, I will describe the same more fully, referring to the accompanying drawing, in which Figure 1 is a side elevation of a cope and drag flask having my invention applied thereto;

Fig. 2 is an end view of the same;

Fig. 3 is a top view of the flask and cope;

Fig. 1 is a like view showing another form of the invention; and

Fi 5 is a detail sectional view on the line 5-5. Fig. 3.

Like symbols of reference herein indicate like parts in each of the figures of the drawing.

As illustrated in the drawings, 1 represents the cope flask and 2 represents the drag flask, which are connected together and used in the usual way in sand molding, and with the use of a pattern (not shown) within the same in the ordinary manner by the packing of the sand (not shown) around such pattern and within such flasks.

Within the sand of the cope flask 1 are a series of sand supporting bars 4, which extend across and are held between opposite walls 1 of said flask. These bars t are pctsitioned parallel with each other within the cope flask 1 and are adapted to fit loosely and be seated in holes 5 in the walls 1, while the ends 4: of said bars project beyond said walls for the purpose hereinafter described. llIounted upon the top faces of the bars i and adjacent to the ends t on the same are the wedge pieces or blocks 6, which fitbe tween such fac and the upper faces of the holes 5 to form a wedging engagement therewith and so act to hold said bars in place within the walls of the cope flask 1. Handles 7 are also pivotally mounted in the ends 4 of the bars 1 for pulling out such bars from the walls of the cope flask when it is desired to remove the same as hereinafter described.

In the use of my improved device. the pattern and sand are placed within the flasks 1 and 2 in the usual manner and the usual sand-supporting hangers (not shown) are placed upon the bars 4 so as to depend therefrom into such sand. The sand 3 is packed within such flasks 1 and 2 and around, the pattern and bars 1 in the usual manner, and such bars and the hangers depending therefrom will act to hold the sand in the "cope flask 1 and keep the same from breaking or falling, in case of any movement or turning over of such flask in the ordinary operations of forming the mold from the pattern or in any of the molding operations.

In case it is desired to remove the bars 1 for any purpose. such as for the formation of a mold extending vertically in the flasks- 1 and 2 and of such a shape and size as would come in contact with or be in close proximity to such bars. the wedge pieces or blocks 6 can be driven through the holes 5 in the walls of the cope flask 1 and thus free the bars with which such blocks ongage, so that by grasping the handles 7 such bars can be pulled through such holes and be removed from the flask.

In case it is desired to provide for further sand supporting bars after the removal of such bars 1 and in the space primarily occupied by such bars 1, one of the bars t within the flask 1 can be provided with holes 9 in, the same and holes 10 can be formed in one of the other walls 1 of the said flask with such holes in line with each other, so that auxiliarv tapered or wedge-shaped sandsupporting bars 11 can be passed through said holes, and be thereby supported by said bar 4 and. said wall at right anglesto said Patented July to, ieir.

. larger space therein, if desired.

lengths and sizes of molds bar. When the bars 11 are so used, spaces will be provided between the same for the formation of a mold from a pattern in each space, or one of said bars 11 can be left out of the flask l and thereby provide for a for the formation of a mold It will also be evident that my improved sand-supporting bars-can be used in other than cope flasks and that various other modifications and changes inthedesign, eonstruotion, arrangement, application and operation of the same, other than those men lJlODBCl or described, may

be resorted to, spirit of the inwithont departing from the sacrificing any of its advanvention, or tages.

It will thus be seen that the use of my improved flask will enable different shapes, to be made in the same by the use ofremovable sand supflopies of this patent may be obtained for bars extending across the flask and having their ends removably secured in said openings, one of said supportingbars having openings formed therein, an end wall having openings formed therein, and supporting bars extending lengthwise of the flask and having their ends removably lnoul'ited in the openings of said first-named supporting bars and said end wall, for the purposes set forth.

2. In a sand molding flask, a pair of side walls having a plurality of registering openings therein, a plurality of supporting bars each adapted for removable mounting in, the openings of said side walls, so as to extend between said side walls, certain of said sup porting bars having holes intermediate the ends thereof, an end wall having a 1 luralitv of openings therein, and a plurality of short supporting bars each adapted to be connected between said end wall and one of said first-named supporting bars, with one of its ends in an opening of the end wall, and the other end in one of the holes of one of said first-named supporting bars, for the purposes set forth.

In testimony whereof, I,the said Miormnl. N. GRAM have hereunto set my hand.

MICHAEL N. GRAM.

Witnesses:

A. B. ANGNEY, J. N. CooKE.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

